Certain exemplary embodiments can provide a system comprising a plurality of discs coupleable to a first watercraft. Wherein, when the plurality of discs is coupled to the first watercraft, each of the plurality of discs deflects a flow of water along the first watercraft such that a partial hydrodynamic lift results as the first watercraft moves across a water surface compared to a second watercraft, the second watercraft not coupled to discs.

Certain exemplary embodiments can provide a system comprising a plurality of discs coupleable to a first watercraft. Wherein, when the plurality of discs is coupled to the first watercraft, each of the plurality of discs deflects a flow of water along the first watercraft such that a partial hydrodynamic lift results as the first watercraft moves across a water surface compared to a second watercraft, the second watercraft not coupled to discs.

A paddle board, comprising a paddle board body (10) comprising an upper surface (11) and a lower surface (11a), wherein the lower surface of the paddle board body is a surface which comes into contact with the water, the upper surface of the paddle board body comprises a first region (11) and a second region (12). In the direction from the upper surface to the lower surface, the second region is lower than the first region, wherein the first region can be for the user to stand and the second region can be for user to sit. By means of the paddle board, the user can paddle when standing on the paddle board, and can also paddle when sitting on the paddle board, such that the user experience is good.

This disclosure extends to systems, apparatus, and methods for quick release mast mounting assemblies for board mounted hydrofoil assemblies. In one exemplary system, a quick release mounting assembly may include board mountable base receiver for mounting to a sports board, which defines a longitudinal receiving recess. A resilient locking member is disposed at a front end of the base receiver. A separate mast connection member formed as a body configured for connection to an upper end of a hydrofoil mast, corresponds to the longitudinal receiving recess, and includes a counterpart structure for forming a secure connection with the resilient locking member. The mast connection member may include opposite shoulder or wing members that extend laterally orthogonal to the longitudinal axis thereof and the receiving recess may include counterpart slots for receiving these members. The resilient locking member may include a separate spring assembly or be a unitary member.

This disclosure extends to systems, apparatus, and methods for quick release mast mounting assemblies for board mounted hydrofoil assemblies. In one exemplary system, a quick release mounting assembly may include board mountable base receiver for mounting to a sports board, which defines a longitudinal receiving recess. A resilient locking member is disposed at a front end of the base receiver. A separate mast connection member formed as a body configured for connection to an upper end of a hydrofoil mast, corresponds to the longitudinal receiving recess, and includes a counterpart structure for forming a secure connection with the resilient locking member. The mast connection member may include opposite shoulder or wing members that extend laterally orthogonal to the longitudinal axis thereof and the receiving recess may include counterpart slots for receiving these members. The resilient locking member may include a separate spring assembly or be a unitary member.

A system and method for a stand up paddle board that utilizes a vertical hollow protrusion through the paddle board that supports the propulsion system and is comprised of two assemblies; a motor and propeller assembly, and a battery and control assembly, the location of the hollow protrusion mitigating the negative aspects of propelling the board with a propeller and the extra weight of the motorized system on the board's balance and maneuverability characteristics.

A system and method for a stand up paddle board that utilizes a vertical hollow protrusion through the paddle board that supports the propulsion system and is comprised of two assemblies; a motor and propeller assembly, and a battery and control assembly, the location of the hollow protrusion mitigating the negative aspects of propelling the board with a propeller and the extra weight of the motorized system on the board's balance and maneuverability characteristics.

A board for a water sport comprises a front surface, a back surface, an upper surface between the front surface and the back surface, a first recess proximate the front surface and within the upper surface, the first recess comprising one or more attachment means for removably attaching a training device to the upper surface, and a second recess proximate the back surface and within the upper surface, the second recess comprising one or more additional attachment means for removably attaching a guidance device configured to facilitate at least partial control of the board. Related sets and boards for water sports are also disclosed.

A board for a water sport comprises a front surface, a back surface, an upper surface between the front surface and the back surface, a first recess proximate the front surface and within the upper surface, the first recess comprising one or more attachment means for removably attaching a training device to the upper surface, and a second recess proximate the back surface and within the upper surface, the second recess comprising one or more additional attachment means for removably attaching a guidance device configured to facilitate at least partial control of the board. Related sets and boards for water sports are also disclosed.

A smart clothing and backpack system enables a user to perform many actions. The smart clothing includes circuitry and/or is made of a conductive material enclosed in an insulation material. The smart clothing includes a set of sensors configured to detect body information. The smart clothing includes multiple electromagnets configured to adjust a size of the smart clothing. The electromagnets are configured to have an increased attraction to make the smart clothing tighter on the body of the user. The system includes a smart backpack to communicate with the smart clothing. The smart backpack includes a Radio Frequency IDentification (RFID) reader configured to detect RFID tags on or in items within the smart backpack. Many other features are able to be implemented with the smart clothing and backpack system. The smart clothing is able to include a wetsuit configured to communicate with a surfboard and/or a backpack.